低温下水芹对生活污水中氨氮、正磷酸盐的去除效果

The Removal Effect of Cress(Oenanthe javanica) on Ammonia-nitrogen and Orthophosphate in Domestic Sewage under Low Temperature

通过设置3组不同浓度（100%、75%、50%）的生活污水,考察水芹（Oenanthe javanica）对污水中氨氮与正磷酸盐的去除效果。结果表明,在9~12℃的低温下,培养6 d时水芹对3种不同浓度污水中的氨氮和正磷酸盐的去除率分别为47.86%、59.34%、55.56%和44.42%、41.74%、32.95%。表明低温下水芹对生活污水中氨氮和正磷酸盐均有较好的去除效果。

The removal effect of cress （Oenanthe javanica） on ammonia and orthophosphate in three concentrations （100%, 75% ,50%） of domestic sewage under low temperature was studied. The results showed that under the temperature 9-12 ℃, the removal rates of ammonia and orthophosphate in three groups were 47.86%,59.34%,55.56% and 44.42%,41.74%,32.95%, respectively.h indicated that the cress had a strong ability to remove the ammonia and orthophosphate in domestic sewage under low temperature.